Tried everything you can do with my AV and admin rights, nothing changes.

I've done some searching on what "OpenProcess() failed" even means and why it is giving me this message, but still cannot find any information as to why this is affecting GI. If anyone has any more ideas, let me know. I do appreciate the help.

I can't play Grim Dawn, unfortunately, because the game is not enjoyable without this mod. So sad..

Can you post a picture?
tell me a bit more of your setup i need a better direction to search for this too